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vlabodo [156]
3 years ago
8

Find the value of x in the triangle shown below.

Mathematics
1 answer:
FrozenT [24]3 years ago
5 0
I think it’s 55 lollll
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D) 7 8/9 gallons

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3 0
3 years ago
Read 2 more answers
GreenBeam Ltd. claims that its compact fluorescent bulbs average no more than 3.24 mg of mercury. A sample of 25 bulbs shows a m
amm1812

Answer:

Null hypothesis:\mu \leq 3.24  

Alternative hypothesis:\mu > 3.24  

Step-by-step explanation:

1) Previous concepts  and data given

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

A right tailed test (sometimes called an upper test) is when the alternative hypothesis statement contains a greater than (>) symbol.

\bar X=3.29 represent the sample mean  

s represent the sample standard deviation

n represent the sample selected

\alpha significance level  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean for fluorescent bulbs is no more than 3.24 mg of mercury, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3.24  

Alternative hypothesis:\mu > 3.24  

IIf we know the population deviation we can apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

3 0
3 years ago
What is the vertical change from point a to point b
kakasveta [241]

Answers:

  • Vertical change = 1
  • Horizontal change = 2
  • Rate of change = 0.5

====================================================

Explanation:

Imagine that we have point A as a buoy in the water. So the horizontal line through 1 on the y axis is the water line. How much should the water line go up so that points A and B are on the same horizontal level? That would be 1 unit up. This is the vertical change. Another term for this is "rise".

After the water goes up, and A and B are on the same level, the question is now: how far to the right do we go from A to B? That would be 2 units. This is the horizontal change. Another term for this is "run".

Using those two values, we can compute the rate of change aka slope.

slope = rise/run = 1/2 = 0.5

So each time we go up 1 (rise) we move to the right 2 (run).

The slope is positive since we're moving uphill while moving to the right.

8 0
2 years ago
What’s the lowest number that could be used in the numerator to make the comparison ?/5 > 5/12 true?
bazaltina [42]
It is true because if you 15/5 > 5/12
6 0
3 years ago
Y= -2/3x - 2
g100num [7]
Nohhegwggsgsgagagagag
7 0
3 years ago
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